[目的]明确丁虫腈与氰氟虫腙混用对水稻二化螟和稻纵卷叶螟的田间防治效果。[方法]2021-2022年于湖南隆回开展了丁虫腈与氰氟虫腙混用及6种杀虫剂单用的田间药效试验。[结果]丁虫腈和氰氟虫腙混用对二化螟和稻纵卷叶螟的控制效果好且存...[目的]明确丁虫腈与氰氟虫腙混用对水稻二化螟和稻纵卷叶螟的田间防治效果。[方法]2021-2022年于湖南隆回开展了丁虫腈与氰氟虫腙混用及6种杀虫剂单用的田间药效试验。[结果]丁虫腈和氰氟虫腙混用对二化螟和稻纵卷叶螟的控制效果好且存在明显的增效作用,其中(37.5+108) g a.i./hm^(2)桶混处理药后21 d对二化螟的防治效果为88.91%~90.66%,略低于乙基多杀菌素75 g a.i./hm^(2)(90.63%~91.85%),而显著优于丁虫腈45 g a.i./hm^(2)(83.26%~85.56%)、氰氟虫腙360 g a.i./hm^(2)(76.47%~80.49%)、甲氨基阿维菌素苯甲酸盐30 g a.i./hm^(2)(70.67%~75.56%)、茚虫威27 g a.i./hm^(2)(64.86%~70.93%)和氯虫苯甲酰胺30 g a.i./hm^(2)(38.76%~46.42%);该处理药后21 d对稻纵卷叶螟的防治效果为90.77%~91.39%,与氰氟虫腙(91.18%~92.34%)相当,而显著优于乙基多杀菌素(85.58%~87.68%)、甲氨基阿维菌素苯甲酸盐(75.26%~80.23%)、茚虫威(73.59%~78.58%)、丁虫腈(70.19%~75.19%)和氯虫苯甲酰胺(50.22%~51.44%)。[结论]丁虫腈与氰氟虫腙桶混对水稻二化螟和稻纵卷叶螟高效,推荐桶混剂量为丁虫腈37.5 g/hm^(2)和氰氟虫腙108 g a.i./hm^(2)。展开更多
The emission of microwave sulfur lamp is mainly composed of visible light. The sulfur lamp, producing little infrared radiation, has high efficiency, long duration of illumination and less energy consumption. In order...The emission of microwave sulfur lamp is mainly composed of visible light. The sulfur lamp, producing little infrared radiation, has high efficiency, long duration of illumination and less energy consumption. In order to probe the agricultural application of the lamp, experiments were carried out with wheat (cv. Yangmai 158) to emphatically study illuminating effects of xenon or sulfur lamp on tillering, jointing and net photosynthetic rate during tillering and jointing periods. Results indicated that there is almost no difference in net photosynthetic rate of wheat leaves growing under different lamps. Xenon lamp significantly advanced the time of jointing, decreased number of tillers, number of total leaves per plant and leaf size, as well as inhibited root growth. In contrast with xenon lamp, sulfur lamp evidently delays the time of heading and grain maturation, increased number of heads per plant, head length, total number of grains per plant, head weight and total grain weight per plant,展开更多
文摘[目的]明确丁虫腈与氰氟虫腙混用对水稻二化螟和稻纵卷叶螟的田间防治效果。[方法]2021-2022年于湖南隆回开展了丁虫腈与氰氟虫腙混用及6种杀虫剂单用的田间药效试验。[结果]丁虫腈和氰氟虫腙混用对二化螟和稻纵卷叶螟的控制效果好且存在明显的增效作用,其中(37.5+108) g a.i./hm^(2)桶混处理药后21 d对二化螟的防治效果为88.91%~90.66%,略低于乙基多杀菌素75 g a.i./hm^(2)(90.63%~91.85%),而显著优于丁虫腈45 g a.i./hm^(2)(83.26%~85.56%)、氰氟虫腙360 g a.i./hm^(2)(76.47%~80.49%)、甲氨基阿维菌素苯甲酸盐30 g a.i./hm^(2)(70.67%~75.56%)、茚虫威27 g a.i./hm^(2)(64.86%~70.93%)和氯虫苯甲酰胺30 g a.i./hm^(2)(38.76%~46.42%);该处理药后21 d对稻纵卷叶螟的防治效果为90.77%~91.39%,与氰氟虫腙(91.18%~92.34%)相当,而显著优于乙基多杀菌素(85.58%~87.68%)、甲氨基阿维菌素苯甲酸盐(75.26%~80.23%)、茚虫威(73.59%~78.58%)、丁虫腈(70.19%~75.19%)和氯虫苯甲酰胺(50.22%~51.44%)。[结论]丁虫腈与氰氟虫腙桶混对水稻二化螟和稻纵卷叶螟高效,推荐桶混剂量为丁虫腈37.5 g/hm^(2)和氰氟虫腙108 g a.i./hm^(2)。
基金This work was supported by the National Natural Science Foundation of China (Grant No. 30170079)the State Key Basic Development Plan Programm (Grant No. G1998010100).
文摘The emission of microwave sulfur lamp is mainly composed of visible light. The sulfur lamp, producing little infrared radiation, has high efficiency, long duration of illumination and less energy consumption. In order to probe the agricultural application of the lamp, experiments were carried out with wheat (cv. Yangmai 158) to emphatically study illuminating effects of xenon or sulfur lamp on tillering, jointing and net photosynthetic rate during tillering and jointing periods. Results indicated that there is almost no difference in net photosynthetic rate of wheat leaves growing under different lamps. Xenon lamp significantly advanced the time of jointing, decreased number of tillers, number of total leaves per plant and leaf size, as well as inhibited root growth. In contrast with xenon lamp, sulfur lamp evidently delays the time of heading and grain maturation, increased number of heads per plant, head length, total number of grains per plant, head weight and total grain weight per plant,
